Quote:
Originally Posted by Doitsu
Please have another look at the attached screen captures. In Arabic_EPUB2_ADE4_medium.png there are a couple of white pixels between the upper right corner of H dropcap and the following letter (which matches the ADE 1.7.3 rendering), however, in Arabic_EPUB3_ADE4_large.png (which shows the converted ePub3 version) the upper right corner of the H dropcap bleeds into the following letter. (You might have to change the font size to see this behavior.)
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It seems the font with EPUB3 is thicker than with EPUB2. I'd say this is ADE artificially emboldening the font, which has the effect of reducing the spacing, because the font metrics are not modified.